Preheat your oven to 400°F.
Slice the chicken breast into a uniform piece if needed and pat dry with paper towels.
Beat the egg in a shallow bowl. In a separate plate, combine the whole wheat breadcrumbs, garlic powder, salt, and pepper.
Dip the chicken breast first in the egg, then in the breadcrumb mixture, ensuring an even coating.
Place the breaded chicken on a lightly greased baking sheet. Drizzle lightly with olive oil.
Bake the chicken in the preheated oven for about 20-25 minutes or until the internal temperature reaches 165°F and the coating is crispy.
While the chicken bakes, place the mixed vegetables on a separate baking sheet, toss with a tiny drizzle of olive oil, salt, and pepper, and roast in the oven for about 15 minutes until tender.
Once the chicken is done, remove it from the oven and sprinkle the grated Parmesan cheese evenly on top. Return to the oven for an additional 2-3 minutes to melt the cheese slightly.
Plate the crispy chicken alongside the roasted vegetables and garnish with fresh basil leaves if desired.
Serve immediately and enjoy your nutritious, delicious meal.